ALKANET

ALKANET: the dark red root of a deciduous plant, of blackish appearance externally but inside showing a blue-red meat, surrounding a whitish core. It readily gives up its red color on infusion in spirits, oils, etc., but not in water, which derives from it only a dirty brown color. Alkanet is used by perfumers, etc., and it is also employed occasionally to color cheese, to improve the appearance of poor grades of port and similar wines, to give the appearance of age to port wine corks, etc.